RPi-3 brcmfmac errors on boot

[Don Zickus]

On Wed, Nov 23, 2016 at 12:00:03PM -0800, Michael Zoran wrote:
> On Wed, 2016-11-23 at 14:35 -0500, Don Zickus wrote:
> > Hi,
> > 
> > I am trying to get bluetooth working on the RPi-3 and realized I
> > needed some
> > out-of-box drivers in Gerd's tree:
> > 
> > https://www.kraxel.org/cgit/linux/log/?h=bcm2837-wifi
> > 
> > Combining his tree with a patch to remove pwr
> > 
> > https://github.com/anholt/linux/commit/a44e87b47148c6ee6b78509f47e6a1
> > 5c0fae890a
> > 
> > I can get the SDIO device detected and the brcmfmac driver to probe
> > it.
> > 
> > However, that results in the following error message:
> > 
> > """
> > brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50
> > """
> > 
> > and neither the wifi nor bluetooth device get detected and added to
> > the bus.
> > 
> 
> I see this alot on the downstream tree if the firmware file hasn't been
> copied from Raspbian.   So just to ask an obvious question, did you
> copy the firmware file?

Hi Michael,

Which firmware file would that be?  I see the driver trying to load the file
and sort of succeed and fail (my debug statements are added below):

[  876.598387] brcmfmac:brcmf_sdio_probe_attach: brcmfmac: F1 signature read @0x18000000=0x1541a9a6
[  876.639996] usbcore: registered new interface driver brcmfmac
[  876.640356] DON: Trying firmware path: /lib/firmware/updates/4.9.0-rc3.final2-bcm2837+/brcm/brcmfmac43430-sdio.bin
[  876.640835] DON: Trying firmware path: /lib/firmware/updates/brcm/brcmfmac43430-sdio.bin
[  876.641173] DON: Trying firmware path: /lib/firmware/4.9.0-rc3.final2-bcm2837+/brcm/brcmfmac43430-sdio.bin
[  876.641595] DON: Trying firmware path: /lib/firmware/brcm/brcmfmac43430-sdio.bin
[  876.643265] DON: requested firmware brcm/brcmfmac43430-sdio.bin, rc 0
[  876.643693] DON: Trying firmware path: /lib/firmware/updates/4.9.0-rc3.final2-bcm2837+/brcm/brcmfmac43430-sdio.txt
[  876.644278] DON: Trying firmware path: /lib/firmware/updates/brcm/brcmfmac43430-sdio.txt
[  876.644652] DON: Trying firmware path: /lib/firmware/4.9.0-rc3.final2-bcm2837+/brcm/brcmfmac43430-sdio.txt
[  876.645147] DON: Trying firmware path: /lib/firmware/brcm/brcmfmac43430-sdio.txt
[  876.645594] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430-sdio.txt failed with error -2
[  876.646000] DON: requested firmware brcm/brcmfmac43430-sdio.txt, rc -2
[  877.681507] brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50
[  878.695236] brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50

It finds /lib/firmware/brcm/brcmfmac43430-sdio.bin but then fails to find
/lib/firmware/brcm/brcmfmac43430-sdio.txt, which makes sense for the files I
have.

Not sure if that means the firmware was loaded, nor if those are even the
right ones _to_ load.

Cheers,
Don